Workshop on the Physics of Excited Nucleon – NSTAR2009, Beijing, April 19 – 22, 2009

Invited plenary talk

Invited parallel talk

Oral contribution

Title: Recent result from the A2 Real Photon Facility at MAMI

Authors: Andreas Thomas for the A2-collaboration

Keywords: Real Photons, Frozen Spin Target, GDH-Sumrule

Abstract:

The upgraded MAMI C accelerator in Mainz is delivering electrons with an energy of 1558MeV routinely. The A2 collaboration is doing experiments with energy marked polarised real photons produced via a remsstrahlung?

In this talk recent results from the GDH-experiment using a longitudinal polarised frozen spin target in combination with the DAPHNE detector and from the Crystal Ball experiment at MAMI will be shown.